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Integrated approach to Flood and Drought Management in the Volta Basin
Floods, Drought, Climate change
Bulletin nº Vol 69 (1) - 2020
Theme: Climate, Disaster risk reduction, Water, Weather
23
Publish Date: 23 March 2020
The Volta River Basin covers a region of about 400 000 km2 with a population of approximately 29 million. The Volta Basin runs through the semi-arid to sub-humid areas of six countries: Benin, Burkina Faso, Côte d’Ivoire, Ghana, Mali and Togo. The Basin is highly vulnerable to meteorological and hydrological events. Baseline socio-economic issues in the region are today exacerbated by considerable changes in the climate over recent decades – a reduction in precipitation and temperature increase.
Third Pole climate warming and cryosphere system changes
Cryosphere
Bulletin nº Vol 69 (1) - 2020
Theme: Polar
23
Publish Date: 23 March 2020
Figure 1. Glaciers distribution over theThird Pole and its surrounding areas. Mountains are sources of water, energy, minerals, forest and agricultural products as well as popular recreational areas. High mountain...
Measurement-Model Fusion for Global Total Atmospheric Deposition, a WMO initiative
Atmosphere
Bulletin nº Vol 69 (1) - 2020
Theme: Observations
23
Publish Date: 23 March 2020
The Earth’s atmosphere's main cleansing mechanism removes chemicals from the air and deposits them onto land and water surfaces. While the effects of these removal processes are mostly beneficial, some can have negative impacts on human health, ecosystems and food security. For example, acid rain – the acidification of rainwater due to nitrogen and sulfur emissions – damages forests, kills insects, corrodes industrial metal structures, etc. Such adverse impacts of deposition are of great interest to society as a whole and more particularly to policymakers, thus, WMO decided to undertake the...
The key role of water management and data for peacebuilding
Water, Data exchange
Bulletin nº Vol 69 (1) - 2020
Theme: Water
23
Publish Date: 23 March 2020
As the climate change crisis becomes a global reality, so does the importance of water. Accessible, potable water is critical for stable human societies and sustainable ecosystems. What’s more, it is now evident that water shortages have the potential to lead to political and social unrest. In Asia, the 1960 Indus Water Treaty between India and Pakistan is currently being challenged by both nations due to recent changes in rainfall patterns and increasing rates of “water withdrawal” that have resulted from dam developments in both nations.
HydroSOS – The Hydrological Status and Outlook System
Water
Bulletin nº Vol 69 (1) - 2020
Theme: Water
23
Publish Date: 23 March 2020
Water-related hazards and threats are a source of deepening concern globally. Tens of millions of people worldwide are affected by these events, and damages are estimated to cost in the order of magnitude of billions of US dollars per year. Water hazards are consistently identified as among the highest global risks in terms of impact (World Economic Forum (WEF), 2020). And scientists expect water-associated risks to intensify in the coming years due to climate change, population growth and increasing economic activities.
Innovating global hydrological prediction through an Earth system approach
Water
Bulletin nº Vol 69 (1) - 2020
Theme: Observations
23
Publish Date: 23 March 2020
Climate change, population growth and human intervention within river channels and catchments make it more challenging than ever to provide reliable information on the current and future state of water in the world's rivers. Yet society urgently needs timely, dependable information for early warning of floods and droughts, which still today surprise and devastate entire communities. Scientific progress must accelerate to meet this challenge.
Flash Flood Guidance System: Response to one of the deadliest hazards
Floods
Bulletin nº Vol 69 (1) - 2020
Theme: Environmental challenges
23
Publish Date: 23 March 2020
Flash floods are among the world’s deadliest natural hazards. They cause more than 5 000 deaths annually and have severe social, economic and environmental impacts. Flash floods account for approximately 85% of all floods and have the highest mortality rate among all categories of flooding.
High Mountain Summit: Outcomes and Outlook
Bulletin nº Vol 69 (1) - 2020
Theme: Polar
23
Publish Date: 23 March 2020
The WMO High Mountain Summit on 29-31 October 2019 concluded with a Call to Action and a roadmap of priority activities. The priority actions aim to support more sustainable development, disaster risk reduction and climate change adaptation both in high-mountain areas and downstream.
Glacier Lake 513, Peru: Lessons for early warning service development
Cryosphere
Bulletin nº Vol 69 (1) - 2020
Theme: Polar
23
Publish Date: 23 March 2020
Glacier shrinkage – accelerated over the last decades due to climate change – is exposing large areas in mountain regions worldwide. But an even dire consequence of the melting ice is the forming of more glacier lakes, which are increasing in size. Glacial lakes have caused some of the world’s most devastating floods, for example, in the Andes, Himalayas and Alps, where thousands of human lives were lost and huge infrastructure damages reported (Carrivick and Tweed, 2013; Bajracharya et al., 2007; Carey 2005).
WMO Space-based Weather and Climate Extremes Monitoring Demonstration Project for East Asia and Western Pacific
Bulletin nº Vol 69 (1) - 2020
Theme: Weather
23
Publish Date: 23 March 2020
Meteorological observations clearly demonstrate that global climate change has occurred since the beginning of the Industrial Revolution. That change has been particularly pronounced since about 1950, and includes changes in weather and extreme climate events. Changes in weather and climate extremes can significantly increase the impacts on society, leading to a greater number of disaster worldwide. One of the world's most disaster-prone regions is the Asia-Pacific.